Pneumatic dispatch apparatus or mechanism



(No Model.)

G. MILES.

PNEUMATIGYDISPATOH APPARATUS 0R MECHANISM. No. 294,899. Patented Mar. 11, 1884.

N. PETERS. Phato-Lilhngraphcn WalhinghamD. c

Nrrnn STATES- PATENT @rricn.

GEORGE MILES, OF \VELLESLEY HILLS, MASSACHUSETTS.

PNEUMATIC DISPATCH-APPARATUS OR MECHANISM.

SPECIFICATION forming part of Letters Patent No. 294,899,. dated March 11, 1884. Application filed September 25, 1882. (No model.)

To all-10700712, it may concern:

Be it known that I, GEORGE Mines, of \Vellesley Hills, in the county of Norfolk, of the Stateof Massachusetts, have invented a new'and useful Improvement in Pneumatic Dispatch Apparatus or Mechanism; and I do hereby declare the same to be described in the following specification and represented in the accompanying drawings, of which- Figure 1 is a side elevation of a dispatch apparatus of my improved kind. Fig. 2 is a front view, and Fig. 3 atransverse section, of one of its receivers as open. Fig. 4 is a longitudinal section of one of the air-cocks.

The nature of my invention is duly set forth in the claim hereinafter presented.

In Fig. 1, A represents a closed fllF-1S6l' voir, having an eduction-pipe, a, leading vertically out of it at top, and provided with a stop-cock, Z), a section of which is given in Fig. 4. In this cook the valvespindle c is represented as'provided with a spring, (I, for closing the valve e upon its seatf in the partition g, such spindle having at its outer end a knob, h. The stop-cock Z2 opens into a dispatch-receiver, B, which, like other such receivers C, D, and E, as shownin Fig. 1, hasamouth, 1;, provided with a door, 70, to be closed either by a spring, Z, and a latch, m, as and arranged in manner as represented in Figs. 2 and 3, or by other suitable devices. From the receiver B a vertical tube or dispatch-conduit, F, extends. A branch pipe, Gr, opens obliquely out of the eduction-pipe'a, and leads into a stop-cock, I), like the stop-cock 1). Such stop-cock b opens into the receiver 0, from which a dispatch-conduit, F, leads. From the branch pipe Gtwo branch pipes, H I, lead horizontally, and communicate with the two stop-cocks b and I), each of which opens into one of the two dispatch-receivers D and E, which communicate with each other by a dispatch-transmitting tube, M.

l? is an air force-pump, whose eductionpipe nopens into the air-reservoir A. The piston of such pump is operated by a steamengine, N, whose induction-pipe 0 has in it a cock, 1), having its valve-spindle connected by a rod, q, with the shorter arm of a lever, r, the longer arm of said lever being provided with a movable weight, 8. The said longer arm is connected by a link, I, with the piston of a small upright cylinder, a, into which, at itsbottom, a pipe, 12, leading from the air-reservoir A, opens. The cylinder u-is to be supported by a column, w, or by other suitable means. On the air being withdrawn from the reservoir A, the piston in the cylinder u will fall therein and cause the valve of the cock 1) to move so as to allow steam to be admitted to the cylinder of the engine, in order to put I the engine in action for the working of it, and the air-pump to effect the necessary supply of air to the reservoir. Each dispatch or transmitting conduit F and F leading from the receivers B and O is at its further end to be provided with a receiver, a stop-cock, and an auxiliary air-tube, like those marked E, b, and I, from which it will be seen that each transmitting pneumatic circuit is composed of a transmitting-conduit, two receivers at the ends thereof, two stop-cocks to such receivers, and a pipe leading from each of such cocks to the air-reservoir, or a pipe communicating either directly or indirectly therewith. In using the said circuit for transmis- I sion of a parcel or a box to fit and slide in the transmitting-tube of the circuit, the two receivers being open, the box or parcel is to be placed in one of them, after which it is to be closed. The stop-cock of such receiver is next to have its valve forced off its seat, in order for air from the reservoir to enter the receiver and drive the box or parcel there from into and through the transmitting-tube and to and into the other or distant receiver. This having taken place, the said valve of the said cock is to be closed and the door of the first receiver is to be opened. In this way a box or parcel may be sent either way through the circuit, an amount of air equal to that expended in effecting such being immediately supplied to the reservoir by the air-pump,

' whose motor or steam-engine will be put in has been provided with a device which regulates the working mechanism so as to control the supply of air. I make no claim to an automatic starter or regulator, considered 5 broadly or in itself.

\Vhat I claim is as follows, viz: l The combination of the regulator or enginei starter, substantially as set forth, with the l steam-engine, air-pump, air-reservoir, and one or more pneumatic (lispatoll-transmitting cir- IO cuits, as described, all being adapted and to operate essentially as set forth.

GEORGE MILES. lVitnesses:

H. EDDY, E. B. PRATT. 

